/* 
 * This is a program from the book.
*/

#include <iostream>
#include <string>

using namespace std;

const string BLACK = "********";
const string WHITE = "        ";
const char NEWLINE = '\n';

int main() {

    string blackLine;
    string whiteLine;
    string blackBlock,
           whiteBlock;

    // construct a black line.
    // |********        ********......
    blackLine = BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE;

    // construct the white line.
    whiteLine = WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK;

    // consturct the rows of squares.
    blackBlock = blackLine + NEWLINE + blackLine + NEWLINE + blackLine + NEWLINE
                         + blackLine + NEWLINE + blackLine + NEWLINE;
    whiteBlock = whiteLine + NEWLINE + whiteLine + NEWLINE + whiteLine + NEWLINE
                         + whiteLine + NEWLINE + whiteLine + NEWLINE;

    // print the results.
    cout << whiteBlock;
    cout << blackBlock;
    cout << whiteBlock;
    cout << blackBlock;
    cout << whiteBlock;
    cout << blackBlock;
    cout << whiteBlock;
    cout << blackBlock;

    cout << endl;

    return 0;
}